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Europa-List: Re: Battery

 
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duanefamly(at)aol.com
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PostPosted: Mon Sep 11, 2017 8:57 pm    Post subject: Europa-List: Re: Battery Reply with quote

From this past post, I believe the Butchers came up with the diode fix. Here is that post:
The ETX36C has been used successfully for years. The Rotax 914 charging system needs to be slightly modified to bring the charging voltage into the range the lithium battery likes (Jim and Heather brought that to my attention). A diode on the 'C' terminal of the Ducati regulator is adequate to fool the regulator into thinking the battery is at a slightly lower voltage than it actually is and so it will up its charge voltage, placing the battery into proper charging range. I think its 13.9 to 14.6 volts per the data sheet, if memory serves.

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From: italianjon (jon.catilli(at)gmail.com)
Sent: ā€ˇMondayā€ˇ, ā€ˇSeptemberā€ˇ ā€ˇ11ā€ˇ, ā€ˇ2017 ā€ˇ12ā€ˇ:ā€ˇ46ā€ˇ ā€ˇPM
To: europa-list(at)matronics.com (europa-list(at)matronics.com)

--> Europa-List message posted by: "italianjon" <jon.catilli(at)gmail.com>

Yes, I have. I've spent the evening trying to work out how it works on the standard Ducati Regulator of the 912.

Can anyone share the secret? My googling comes up blank.

Obviously, it's something to do with the voltage drop across the diode fooling the regulator, but I don't know enough about how voltage regulators work to understand it, or how exactly to wire it in. I guess it's not hard, but I don't want to $Ć‚Ā£%^ up a working system with a silly mistake Smile


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